diff options
author | Mike Reed <reed@google.com> | 2018-01-30 10:12:22 -0500 |
---|---|---|
committer | Skia Commit-Bot <skia-commit-bot@chromium.org> | 2018-01-30 15:56:35 +0000 |
commit | 63227ca63b09ad534b52b1b1957202ab18aa53f7 (patch) | |
tree | d806fb6ce3fc95d4c08595943239455279f1ff57 /tools | |
parent | ab2621d3e2d2055096b9fbebf16ee443e4ea90fb (diff) |
handle clipping large triangles
originally found by fuzzer.
Bug: skia:
Change-Id: I45007a619f13936153c0db8a60b3631a2c9db20c
Reviewed-on: https://skia-review.googlesource.com/101741
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/sk_pixel_iter.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/tools/sk_pixel_iter.h b/tools/sk_pixel_iter.h new file mode 100644 index 0000000000..8bf5a55647 --- /dev/null +++ b/tools/sk_pixel_iter.h @@ -0,0 +1,61 @@ +/* + * Copyright 2018 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef sk_pixel_iter_DEFINED +#define sk_pixel_iter_DEFINED + +#include "SkPixmap.h" +#include "SkSurface.h" + +namespace sk_tool_utils { + + class PixelIter { + public: + PixelIter(); + PixelIter(SkSurface* surf) { + SkPixmap pm; + if (!surf->peekPixels(&pm)) { + pm.reset(); + } + this->reset(pm); + } + + void reset(const SkPixmap& pm) { + fPM = pm; + fLoc = { -1, 0 }; + } + + void* next(SkIPoint* loc = nullptr) { + if (!fPM.addr()) { + return nullptr; + } + fLoc.fX += 1; + if (fLoc.fX >= fPM.width()) { + fLoc.fX = 0; + if (++fLoc.fY >= fPM.height()) { + this->setDone(); + return nullptr; + } + } + if (loc) { + *loc = fLoc; + } + return fPM.writable_addr(fLoc.fX, fLoc.fY); + } + + void setDone() { + fPM.reset(); + } + + private: + SkPixmap fPM; + SkIPoint fLoc; + }; + +} // namespace sk_tool_utils + +#endif // sk_tool_utils_DEFINED |